* {
	font-size: 18px;
	font-family: 宋体;
	margin: 0 auto;
	padding: 0;
}
h4 {
	color: red;
	padding: 15px auto;
	height: 30px;
}
td {
	color: black;
	font-size: 20px;
}
tr {
	text-align: center;
}

p {
	text-indent: 2em;
	font-size: 18px;
	text-align: left;
}
table {
	background: #fff;
	border: 0px;
	text-align: center;
	width: 1002px;
}
#table3 {
	clear: both;
	margin: 0;
	float: left;
	border: 1px;
	height: 250px;
	width: 200px;
}
#nav{
	background-color: #669;
	text-align: center;
	/* width: 120px; */
	height: 40px;
	margin: 0 auto;
	padding: 5px 20px;
}
a:link, a:visited, a:active{
	text-decoration: none;
	color: white;
	background-color: #669;
}
a:hover{
	color: white;
	background-color: #99f;
}
hr{
	color: #c0c0c0;
}